نتایج جستجو برای: high resolution schemes

تعداد نتایج: 2266311  

پایان نامه :وزارت بهداشت، درمان و آموزش پزشکی - دانشگاه علوم پزشکی و خدمات بهداشتی درمانی مشهد - دانشکده دندانپزشکی 1393

چکیده: مقدمه و هدف: آگاهی از آناتومی کانال خصوصاً در آناتومی های پیچیده مثل کانال های c-shape برای انجام یک درمان موفق ضروری می باشد. از آنجا که در کانال های c-shape نحوه ارتباط از کرونال تا آپیکال در نحوه درمان انجام شده مهم است تشخیص وضعیت آناتومیک این کانال ها می تواند اهمیت زیادی داشته باشد. در این مطالعه، مقایسه ای بین پنج روش مختلف برای تشخیص آناتومی c-shape انجام گرفته تا روشی دقیق برای...

Journal: :iranian journal of allergy, asthma and immunology 0
mostafa ghanei henry d. tazelaar ali amini hari mohammadreza peyman hassan mohammad hoseini akbari jafar aslani

intractable asthma is a challenging clinical problem. this study was conducted to determine whether a subset of patients with intractable asthma may be misdiagnosed and have a form of bronchiolitis instead and also to determine the effectiveness of macrolide therapy in these patients. seventy six patients with intractable asthma were re-treated with recommended maximal doses of oral prednisolon...

Journal: :J. Comput. Physics 2015
Xuliang Liu Shuhai Zhang Hanxin Zhang Chi-Wang Shu

In this paper, we develop a class of nonlinear compact schemes based on our previous linear central compact schemes with spectral-like resolution [X. Liu, S. Zhang, H. Zhang and C-W. Shu, A new class of central compact schemes with spectral-like resolution I: Linear schemes, Journal of Computational Physics 248 (2013) 235-256]. In our approach, we compute the flux derivatives on the cell-nodes ...

2015
Bo Waggoner

We wish to approximately maximize f , a nonnegative submodular function on 2 . We consider the space [0, 1] , where a set S corresponds to the indicator point xS (with 1s at the coordinates of elements in S and 0s elsewhere). We can think of a point x ∈ [0, 1] as representing a distribution on 2 , and let R(x) denote a random set obtained by including each i independently with probability xi. T...

2009
Christoph Junghans Matej Praprotnik

c © 2009 by John von Neumann Institute for Computing Permission to make digital or hard copies of portions of this work for personal or classroom use is granted provided that the copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. To copy otherwise requires prior specific permission by the publisher ment...

2016
Moran Feldman Ola Svensson Rico Zenklusen

We introduce a new rounding technique designed for online optimization problems, which is related to contention resolution schemes, a technique initially introduced in the context of submodular function maximization. Our rounding technique, which we call online contention resolution schemes (OCRSs), is applicable to many online selection problems, including Bayesian online selection, oblivious ...

Journal: :Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 2020

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